One of the problems of using a withdrawal design as part of a single-case experiment is the
A. difficulty of measuring changes that are associated with removal of a treatment.
B. confounding factor of the placebo effect when the treatment is removed.
C. ethical issue of removing treatment that appears to be helping the patient.
D. impossibility of removing the treatment equally for the treatment subjects and control subjects.
Answer: C
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A group of psychologists review the literature on the heritability of intelligence. They conclude that most of the estimates indicate that __________ percent of intelligence is due to genetics.
A. 20 B. 30 C. 50 D. 80
Phenylketonuria is a(n) ____ that can cause intellectual disability if untreated
a. chromosomal abnormality b. environmental toxin c. inborn error of metabolism d. infection
The language used by the nervous system to communicate is:
a. electrochemical b. behavioral c. hormonal d. structural
The EEG is used to measure
A) brain waves B) emotions C) brain structures D) the unconscious mind